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1. 发明授权

US5926497A Diffraction grating with alternately-arranged different regions, optical semiconductor device with the diffraction grating, and apparatus and optical communication system using the same 失效
$Diffraction grating with alternately-arranged different regions, optical semiconductor device with the diffraction grating, and apparatus and optical communication system using the same$
标题翻译：具有交替布置的不同区域的衍射光栅，具有衍射光栅的光学半导体器件，以及使用其的光学通信系统
公开(公告)号：US5926497A
公开(公告)日：1999-07-20
申请号：US816335
申请日：1997-03-13
申请人： Jun Nitta , Yuichi Handa , Hidetoshi Nojiri
发明人： Jun Nitta , Yuichi Handa , Hidetoshi Nojiri
IPC分类号： G02B5/18 , B82Y20/00 , G02B5/30 , H01S5/00 , H01S5/042 , H01S5/062 , H01S5/0625 , H01S5/12 , H01S5/32 , H04B10/40 , H04B10/50 , H04B10/508 , H04B10/532 , H04B10/572 , H04B10/58 , H04B10/60 , H01S3/19
CPC分类号： H01S5/0625 , H01S5/12 , H01S2301/14 , H01S5/06236 , H01S5/1228 , H01S5/3201 , H01S5/3216
摘要： A diffraction grating includes first regions for mainly reflecting first polarized light and second regions for mainly reflecting second polarized light. The first regions and the second regions are alternately arranged in a light propagation direction in a variety of manners to appropriately set its polarization-mode dependency according to need. An optical semiconductor device includes a semiconductor substrate, a laser structure and that diffraction grating formed in the laser structure. The laser structure is a distributed feedback semiconductor laser structure or a distributed Bragg reflector semiconductor laser structure formed on the semiconductor substrate.
摘要翻译：衍射光栅包括用于主要反射第一偏振光的第一区域和用于主要反射第二偏振光的第二区域。第一区域和第二区域以各种方式沿光传播方向交替布置，以根据需要适当地设定其偏振模式依赖性。光学半导体器件包括半导体衬底，激光结构和形成在激光结构中的衍射光栅。激光器结构是分布式反馈半导体激光器结构或在半导体衬底上形成的分布式布拉格反射器半导体激光器结构。

2. 发明授权

US4815027A Optical operation apparatus for effecting parallel signal processing by detecting light transmitted through a filter in the form of a matrix 失效
标题翻译：光学操作装置，用于通过以矩阵的形式检测透过滤光器的光来进行并行信号处理
公开(公告)号：US4815027A
公开(公告)日：1989-03-21
申请号：US102789
申请日：1987-09-23
申请人： Jun Tokumitsu , Kenji Saito , Yuichi Handa , Nobuyoshi Tanaka , Hidetoshi Nojiri
发明人： Jun Tokumitsu , Kenji Saito , Yuichi Handa , Nobuyoshi Tanaka , Hidetoshi Nojiri
IPC分类号： G06E3/00 , H04N1/60 , G06G9/00 , G06G7/16
CPC分类号： G06E3/005 , H04N1/6016
摘要： In an optical operation apparatus, a light source emits a light intensity-modulated on the basis of a first electrical signal. A modulating device receives the light from the light source and intensity-modulates the light on the basis of the first signal, and a photoelectric converting device converts the light modulated by the modulating device into a second electrical signal. These functions are carried out by any of a number of different arrangements of filter elements, and electro-optical or acoustico-optical devices can be used for intensity modulation.
摘要翻译：在光操作装置中，光源基于第一电信号发射强度调制光。调制装置接收来自光源的光并基于第一信号对光进行强度调制，并且光电转换装置将由调制装置调制的光转换为第二电信号。这些功能通过滤波元件的多种不同布置中的任何一种进行，并且电光或光学设备可用于强度调制。

3. 发明授权

US5901166A Oscillation polarization mode selective semiconductor laser, light transmitter and optical communication system using the laser 失效
标题翻译：振荡偏振模式选择半导体激光器，光发射机和光通信系统采用激光器
公开(公告)号：US5901166A
公开(公告)日：1999-05-04
申请号：US972728
申请日：1997-11-18
申请人： Jun Nitta , Yuichi Handa
发明人： Jun Nitta , Yuichi Handa
IPC分类号： H01S5/026 , H01S5/062 , H01S5/0625 , H01S5/068 , H01S5/10 , H01S5/12 , H01S5/125 , H01S5/34 , H01S5/40 , H01S5/50 , H01S3/18
CPC分类号： B82Y20/00 , H01S5/026 , H01S5/0625 , H01S2301/14 , H01S5/0264 , H01S5/06236 , H01S5/06821 , H01S5/1003 , H01S5/1021 , H01S5/1215 , H01S5/1225 , H01S5/1243 , H01S5/125 , H01S5/3404 , H01S5/3418 , H01S5/4025 , H01S5/4031 , H01S5/50
摘要： A semiconductor laser that selectively performs oscillations in different polarization modes has first and second laser regions on a substrate. The first laser region exhibits a gain spectrum in which one polarization mode is dominant and the second laser region exhibits a gain spectrum in which a different polarization mode is dominant. Current injected independently into the each laser region causes polarization mode oscillation competition. One of the different polarization mode oscillations is selected by, for example, injecting a minute modulated current into at least one of the first and second laser regions.
摘要翻译：选择性地执行不同偏振模式的振荡的半导体激光器在衬底上具有第一和第二激光区域。第一激光区域表现出增益光谱，其中一个偏振模式是主要的，而第二激光区域表现出不同偏振模式占优势的增益光谱。独立注入每个激光区域的电流引起极化模式振荡竞争。通过例如将微小的调制电流注入到第一和第二激光区域中的至少一个来选择不同的偏振模式振荡之一。

4. 发明授权

US06334014B1 Optical fiber apparatus provided with demultiplexing/multiplexing unit on fiber's end portion, optical detecting apparatus provided with demultiplexing/multiplexing unit on its light receiving surface, and optical transmission system using the same 失效
标题翻译：在光纤端部设置有解复用单元的光纤设备，在其光接收表面上设置有解复用/复用单元的光检测设备，以及使用该解复用/复用单元的光传输系统
公开(公告)号：US06334014B1
公开(公告)日：2001-12-25
申请号：US09427661
申请日：1999-10-27
申请人： Jun Nitta , Yuichi Handa , Takahiro Numai
发明人： Jun Nitta , Yuichi Handa , Takahiro Numai
IPC分类号： G02B626
CPC分类号： G02B6/29358 , G02B6/02038 , G02B6/02061 , G02B6/2938
摘要： An optical fiber apparatus includes an optical fiber, and a demultiplexing/multiplexing unit for demultiplexing or multiplexing at least a light wave of at least a wavelength with a sufficiently narrow wavelength spectrum that is determined by a resolving power thereof, such as a Fabry-Perot etalon. The demultiplexing/multiplexing unit is provided or formed directly on at least an end face of the optical fiber. An optical detector array including a plurality of optical detectors for detecting demultiplexed light waves may be provided on a light emergence surface of of the demultiplexing/multiplexing unit.
摘要翻译：一种光纤装置，包括光纤，以及解复用/多路复用单元，用于至少解复用或多路复用至少具有由其分辨能力确定的足够窄的波长谱的波长的光，例如Fabry-Perot 标准具。解复用/多路复用单元直接设置在光纤的至少端面上。包括用于检测解复用光波的多个光检测器的光检测器阵列可以设置在解复用/复用单元的出光表面上。

5. 发明授权

US5862165A Variable wavelength light source using a laser, wavelength control method, optical communication system and optical communication method 失效
标题翻译：使用激光的可变波长光源，波长控制方法，光通信系统和光通信方法
公开(公告)号：US5862165A
公开(公告)日：1999-01-19
申请号：US705297
申请日：1996-08-29
申请人： Yuichi Handa , Masao Majima , Jun Nitta
发明人： Yuichi Handa , Masao Majima , Jun Nitta
IPC分类号： G02F1/01 , G02F1/025 , G02F1/09 , G02F1/313 , H01S5/00 , H01S5/042 , H01S5/062 , H01S5/0625 , H01S5/12 , H01S5/343 , H04B10/516 , H04B10/524 , H04B10/532 , H04B10/54 , H04B10/564 , H04B10/572 , H04B10/58 , H04B10/61 , H01S3/10
CPC分类号： B82Y20/00 , H01S5/0625 , H01S5/06258 , H04B10/532 , H01S2301/14 , H01S5/06236 , H01S5/06255 , H01S5/12 , H01S5/34306 , H01S5/34313
摘要： A variable wavelength light source is provided with a laser of which the oscillating state can be changed over between two oscillating states accompanied by a change of an oscillation wavelength, and an optical selection element for selecting an output light in one of the two oscillating states of the laser. The optical selection element is capable of changing over which of the output lights in the two oscillating states of the laser is to be selected. Also, by using a laser in which the oscillation wavelength in the respective oscillating states can be changed, the wavelength variation ranges in the both oscillating states can be used.
摘要翻译：可变波长光源设置有激光，其中振荡状态可以在伴随振荡波长的变化的两个振荡状态之间变化;以及光选择元件，用于选择两个振荡状态之一的输出光激光。光选择元件能够改变选择激光器的两个振荡状态中的哪个输出光。此外，通过使用其中可以改变各个振荡状态下的振荡波长的激光器，可以使用两种振荡状态下的波长变化范围。

6. 发明授权

US4793675A Element having light waveguides and method of making same 失效
标题翻译：具有光波导的元件及其制造方法
公开(公告)号：US4793675A
公开(公告)日：1988-12-27
申请号：US170622
申请日：1988-03-18
申请人： Yuichi Handa
发明人： Yuichi Handa
IPC分类号： G02B6/12 , G02B6/134 , G02F1/035 , G02F1/125 , G02F1/1339 , G02F1/33 , G02F1/335 , G02B6/10
CPC分类号： G02B6/1342 , G02F1/335
摘要： A method of making and an element having a light waveguide in which the input-output area through which light is input or output is made into a light waveguide of a high threshold value of optical damage formed by outside diffusion of lithium oxide or by ion exchange and the optically functional portion in which the waveguide light is modulated or deflected by extraneous action is made into a light waveguide formed by diffusion of a metal of high light modulation or light deflection efficiency.
摘要翻译：一种制造方法和具有光波导的元件，其中输入或输出光的输入 - 输出区域被制成由氧化锂的外部扩散或通过离子交换形成的光学损伤的高阈值的光波导并且通过外部作用将波导光调制或偏转的光学功能部分制成通过高光调制或光偏转效率的金属的扩散而形成的光波导。

7. 发明授权

US6008675A Polarization-mode selective semiconductor laser with a bending channel stripe, apparatus including the same and optical communication system using the same 失效
标题翻译：具有弯曲通道条纹的极化模式选择性半导体激光器，包括其的装置和使用该半导体激光器的光通信系统
公开(公告)号：US6008675A
公开(公告)日：1999-12-28
申请号：US901288
申请日：1997-07-29
申请人： Yuichi Handa
发明人： Yuichi Handa
IPC分类号： H04B10/40 , B82Y20/00 , H01S5/00 , H01S5/10 , H01S5/12 , H01S5/50 , H04B10/07 , H04B10/272 , H04B10/275 , H04B10/278 , H04B10/50 , H04B10/532 , H04B10/54 , H04B10/60 , H01S3/08
CPC分类号： H01S5/12 , H01S2301/14 , H01S5/10 , H01S5/1039 , H01S5/1085 , H01S5/5009
摘要： A polarization-mode selective semiconductor laser includes a semiconductor laser structure including an active layer for generating gain spectra for the first and second different polarization modes and a diffraction grating formed with a uniform pitch over the laser structure. The laser structure includes a first DFB reflector portion with a first channel stripe and a second DFB reflector portion with a second channel stripe connected to the first stripe channel. The first DFB reflector portion and the second DFB reflector portion is serially arranged in a cavity direction of the laser. The first and second stripe channels are bent relative to each other such that a Bragg wavelength for the first polarization mode is coincident with a gain peak wavelength for the first polarization mode in the first DFB reflector portion, to make the first polarization mode dominant in the first DFB reflector portion, and that a Bragg wavelength for the second polarization mode is coincident with a gain peak wavelength for the second polarization mode in the second DFB reflector portion, to make the second polarization mode dominant in the second DFB reflector portion.
摘要翻译：偏振模选择半导体激光器包括半导体激光器结构，其包括用于产生用于第一和第二不同偏振模的增益谱的有源层和在激光器结构上以均匀间距形成的衍射光栅。激光器结构包括具有第一通道条纹的第一DFB反射器部分和具有连接到第一条带通道的第二通道条带的第二DFB反射器部分。第一DFB反射器部分和第二DFB反射器部分沿激光器的空腔方向串联布置。第一和第二条纹信道相对于彼此弯曲，使得第一偏振模式的布拉格波长与第一DFB反射器部分中的第一偏振模式的增益峰值波长一致，以使第一偏振模式在第一DFB反射器部分，并且第二偏振模式的布拉格波长与第二DFB反射器部分中的第二偏振模式的增益峰值波长一致，以使第二偏振模式在第二DFB反射器部分中占主导地位。

8. 发明授权

US5379142A Demultiplexing apparatus and optical communication system using the demultiplexing apparatus 失效
标题翻译：使用解复用装置的解复用装置和光通信系统
公开(公告)号：US5379142A
公开(公告)日：1995-01-03
申请号：US170905
申请日：1993-12-21
申请人： Yuichi Handa
发明人： Yuichi Handa
IPC分类号： G02B6/293 , G02B6/12 , G02B6/126 , G02B6/34 , H01S5/00 , H04J14/00 , H04J14/02
CPC分类号： G02B6/126 , G02B6/29397
摘要： A polarization-independent wavelength demultiplexing apparatus for demultiplexing a light beam of at least one predetermined wavelength, includes a first demultiplexer for demultiplexing the light beam at a predetermined wavelength to obtain a component of the light beam in a first polarization state and second demultiplexer for demultiplexing the light beam at the predetermined wavelength to obtain a component of the light beam in a second polarization state, different from the first polarization state. The first demultiplexer and the second demultiplexer are arranged in a serial manner or in a parallel manner with respect to light transmitted through the demultiplexing structure.
摘要翻译：一种用于对至少一个预定波长的光束进行解复用的偏振无关波长解复用装置，包括用于以预定波长解复用光束以获得第一偏振状态的光束的分量的第一解复用器和用于解复用的第二解复用器以预定波长的光束获得与第一偏振状态不同的第二偏振状态的光束的分量。第一解复用器和第二解复用器相对于通过解复用结构传输的光以串行方式或并行布置。

9. 发明授权

US5369719A Optical device with an optical coupler for effecting light branching and/or combining and an optical amplifier 失效
标题翻译：具有用于实现光分支和/或组合的光耦合器的光学装置和光放大器
公开(公告)号：US5369719A
公开(公告)日：1994-11-29
申请号：US899472
申请日：1992-06-16
申请人： Seiji Mishima , Yuichi Handa
发明人： Seiji Mishima , Yuichi Handa
IPC分类号： G02B6/122 , G02B6/12 , G02B6/28 , G02B6/42 , G02F1/35 , H01S5/00 , H01S5/026
CPC分类号： H04B10/291 , G02B6/2817 , G02B6/4246 , H01S5/026
摘要： A first light waveguide is formed, and second and third light waveguides are respectively connected to the first light waveguide at first and second positions. A first coupler for effecting tight branching and/or combining is arranged near the first position, and a second coupler for effecting light branching and/or combining is arranged near the second position. An optical amplifier is arranged on the first light waveguide between the first and second positions for compensating for a light loss of a light wave caused by each of the first and second coupler.
摘要翻译：形成第一光波导，第二和第三光波导在第一和第二位置分别连接到第一光波导。用于实现紧密分支和/或组合的第一耦合器设置在第一位置附近，并且用于实现光分支和/或组合的第二耦合器设置在第二位置附近。光放大器布置在第一和第二位置之间的第一光波导上，用于补偿由第一和第二耦合器中的每一个引起的光波的光损失。

10. 发明授权

US5239600A Optical device with an optical coupler for effecting light branching/combining by splitting a wavefront of light 失效
标题翻译：具有光耦合器的光学装置，用于通过分光光束来分光/组合
公开(公告)号：US5239600A
公开(公告)日：1993-08-24
申请号：US777193
申请日：1991-10-16
申请人： Yuichi Handa , Mitsutoshi Hasegawa
发明人： Yuichi Handa , Mitsutoshi Hasegawa
IPC分类号： G02B6/122 , G02B6/125 , G02B6/28 , H01S5/00 , H01S5/026 , H01S5/10 , H01S5/40
CPC分类号： H01S5/10 , G02B6/125 , G02B6/2817 , H01S5/026 , H01S5/4056
摘要： An optical device includes a channel or three-dimensional light waveguide for propagating a light wave therethrough and an optical coupler for effecting at least one of branching and combining of the light wave by splitting a wavefront of a field distribution of the light wave. The coupler is produced by forming a portion whose reflection factor is different from the waveguide, extending in a vertical direction of the waveguide. The portion of different reflection factor is formed deep enough in the vertical direction to perform the splitting of the wavefront of the field distribution of the light wave with respect to at least a horizontal or lateral direction, or the portion of different reflection factor is formed at a flat portion of the waveguide.

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